Door-controller.



W. K. HENRY.

DOOR CONTROLLER.

APPLICATION FILED MAY 29. ISIS.

Patented Sept. 428, 1915.

2 SHEETS-SHEET l.

w. K. HENRY.

DOOR CONTROLLER.

APPLICATION FILED MAY 29. 1915.

Patented Sept. 28, 1915.

2 SHEETS-SHEET 2.

M//WME Fifi E.

WILLIAM; K. HENRY, or NEW Brennern, CONNECTICUT, AssrGNon 'ro 'rnnAMEnroAN HARDWARE ooRronArIoN, or Nnw 1an-raam,y ooNNEorIoo-T, A eonrfonnrron or CONNECTICUT.

` noon-CONTROLLER.

Specicaton or" Letters atent. Patented Spi. 28, 1915.

Application filed May 29, 1915. Serial No. 31,091.

To all whom t may concern.' Y f Be it known that l, WILLIAM KfHENRY, a

citizen of the United States of America, re-

of the device it is particularly useful in con-'-` nection with screen doors or other doors ofv light construction.

In the drawings; Figure 1 is aplan view. Fig. 2 is a relatively enlarged vertical section longitudinally through the cylinder, some parts'being in elevation. Fig. 3 is a section on plane of line 3 3 of Fig. Q. Figs. 1, 5 and 6 are perspective viewsk of details.

1 represents the main frame which is pref-y erably of cylindrical form. 2 is a removable cap at one end.

3 is a spindle,.the lower end of which passes diametrically through the cylinder and ris preferably stepped inthe bottom thereof. NearA the lower end of thejspindle is a segmentalgear or interrupted pinion e. 5 is an upper bearing ,for the spindle provided with a suitabley packing gland 6. Be-

low the packingv gland is a relatively largef annular space or chamber 7 which serves to prevent Vthe liquid fromv creeping up the spindle.

8 is a piston head having the usual ballcheck valve 9therein.

10 is a slotted member loosely connected at one end to the piston head 8. On the opposite side walls of the slot are two series of gear teeth 11-11 designed tobe engaged by the teeth of the interrupted pinion 4 after the manner set forth in my former Patent No. 960,641. As the spindle rotates in one direction or the other, the interrupted pinion will engage one or the other sets of gear teeth 11--111L and reciprocate the slotted member 10 and the piston head 8. The cylinder may be provided with the usual conof which the y' trol by-pass having the usual controller valve 14 whereby the checking resistance may be Inodiiied. Back of the slotted member 10 and between it and the cap is a spring 15, which serves to press the piston forwardly in the cylinder in the checkingA direction. The cap is preferably provided with a guide pin 16 which egitends into the spring 15 to prevent the latter from buckling to such an extent as to engage the side walls yof the cylinder, at the same time leavl, to keep the parts properly lubricated at all times, but also constitutes the checking medium. v On the upper end of the spindle o is mounted a lever l arm 17, the mounting preferably being in the form of a hinge whereby the said lever arm may be turned over from one end to the other of the check thus making the device at once reversible without the necessity kof removing or replacing any parts. The arm 17 is preferably provided at its outer end' with ank olfset 18 to afford proper clearance for a link 19 by which ythe outer end of the lever arm 17 may be connected to a bracket 20, which latter is secured to the inner face of the jamb 'orI casing.

Pry theconstruction herein described the door may swing to the extent of 180O withbut practically a one-third rotation of the, spindle." The inner end 17L of the lever arm 17 iscliset and so connected to the spindle that the hinge pin or pivot upon which the arm turns is Aslightly oblique to the line of the lever arm when the lever 17' stands on the center line of the cylinder. Thus the spindle and pinion i is given a slight turn at the outset (see Fig. 8) whereby the spring is initially put under slight tension. As the door is opened, the lever arm 17 swings and turnsr the spindle 3 so as to draw forward the piston 8 through the medium of the interrupted pinion. This puts the spring 15 under added tension whereby when the door is released said spring will return the door to the closed position, the piston offering the desired resistance during the closing movement.

One end of the slot in the slotted memberI 10 preferably siiiiiciently short to stop the spindle so that'fit cannot turn in that vendl sufiiciently to 'shift the gear teeth 4 Vfrom one rack tol the4 other, the-said slot being yshortened Vin any desired way as Vfor exampleV by-inserting a stop pin 22.

Vhat I claim is:

Y l a door controlling device, acylinder, a checking piston mounted wholly in one endvthereof, a spring arranged wholly iii the opposite end of said cylinder pressing'said piston in onedirection, a yslotted member interposed betweensaid'spring and piston,

` two lraclnsfon theopposite sides or the slotY in saidslotted member, a spindle passing,V

' of said :joint being oblique to the line'oil the;V

diainetri'cally into said cylinderfand into said slotted member, an .interrupted pinion on "said spindle for engaging said racks alternately, with' means for yconriectingsaid Ycylinder toa door, and with means for rotating said spindle, said 'means being ar ranged to be connected to a door casing, said means including a lever arm reversibly conl 2.; In adoor `controlling device, a cylinder,

a clie'ckingfpiston therein,'a spring in said Vcylinder `for Vpressing said piston inV one di- A* van interrupted pinion on the spindle for rection, a slotted member interposed be# tween said spring and piston, two racks on`r the opposite sides of the slot in said slotted fmember, a jspindle passing diametrically into said cylinder and intosaid slotted inember,V an'iinterrupted pinion onY said "spindleV for engaging said racks I alternately, with means for connecting said cylinder to a door and with means for rotating'said spindle,

Vs'aidiineans being arrangedtorbe connected toaA door'casing, said means including a A Alever arm reversibly connected to the spin- Vdie','said-.lever arm being' arranged at such A an angle to the spindle that'when the lever armis in line with thecenterV line "of, the

Copies of this patent maybe obtained for Y will.

mesh with one ofthe racks.

In a door check, aV cylinder, apiston,`

der, a i'aclr member interposed between the piston and the spring and loosely connected at one end to the piston, a guide pin rigidly supported at its rear end by the end Vof the cylinder and arranged to support the other cylinder,tlie'iiiterrupted pinion will be in Y end of said rack member as it moves tofand 'i fro.

ton andthe spring and looselyfconnected atA one endto said piston, and aguide pin rigidly carried by the cap for supporting one end of said rack member.

5.1ii a door controller, a cylinder,

el. in adoor controller, a cylinder, al

checking piston mounted wholly'in oneendv Y thereof, aspring arranged wholly in the opposite endthereoi, aniinte'rmediate slotted V70 insinberfbetween said spring and piston and loosely Vconnected-at one end to the latter, s

- two'raeks on the' opposite sides. of the slotY insaid slotted'member, a spindle` passing diametrically into said cylinder iand slot,

alternately engaging said racks, means for saidliinge .being transverse to the axis of the spindle whereby said controllerniay be adaptedto either' right or left hand use at I i Witnesses: n j f NEWTON Gr. CURTIS,

WM. V. COLLINS.V

WILLIAM ieiiENRY, V

five centsv each, Vby addressing' the g Commissioner of. Patei1ts, x Washington, D. C. 

